Trolley.



M. LEV, la.

TROLLEYl APPLICATION l'lLED JUNE 28| 1915.

Patented July 11, 1916.

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1VIARK LEV, J' R., OF NEAR LOS ANGELES, CALIFORNIA.

TROLLEY.

Application filed .Tune 28, 1915.

This invention relates to improvements in trolleys, and relatesparticularly to an improvement in the present style of trolley toincrease the efiiciency of electrical contact with the revolving trolleywheel.

In carrying out myrinvention, I provide a mechanism whereby such adevice as is shown and described in my Patent No. 1,140,689, issued May25th, 1915, may be applied to an ordinary trolley without any materialchange therein. I thus provide for the use of existing trolleys and, bythe addition of a certain simple mechanism, make these trolleysefficient in their operation. The mechanism by which I accomplish theseresults is described in detail in the following specification, in which-Figure 1 is a vertical section of my improved trolley construction, Fig.2 is a side elevation of the same, Fig. 3 is a horizontal section takenas indicated by line 3 3 on Fig. 1, and Fig. 4 is a detail cross sectiontaken as indicated by line 4-4 on Fig. 3.

In the drawings the numeral 10 designates an ordinary trolley harp oftypical design, having a lower socket 11 adapted to fit upon the usualtrolley pole. This harp has two furcations 12 and, according` to myvinvention, has a hollow wheel shaft 13 carried between the furcationsin the manner shown. I replace the ordinary wheel shaft with the shaft13, which shaft isrlongerthan thel ordinary shaft and projects on veachside of the harp as is clearly shown in Figs. 1 and The shaft 13 ishollow for holding a lubricant and has lubricating holes 14 tolubricatethe wheel and the contact plates or washers 15. The contactwashers' 15 lie one on each side of the wheel hub 16; and these washershave extensions 18 which project through the furcations of the harp andare engaged on the outside faces of the harp by the iiat springs 19. Itis one of the particularly objectionable features of the ordinarytrolley that the springs 19 lose their strength, or become bent orbroken or burned away on the trolley, leaving the washers without anymeans for pressing them into good electrical engagement withSpecification of Letters Patent.

Patented July 11, 1916.

Serial No. 36,613.

the wheel hub 16. My improvement provides a means for pressing thewasher 15 continuously into good and uniform engagement with the wheelhub; and improvement may be added to the ordinary trolley whethersprings19 are present or not. If the springs 19 are present, then lmy devicepresses against these springs, but if the springs 19 are not present,then my device presses directly against the extensions 18, as willhereinafter be described. Upon the opposite projecting ends of shaft13 Imount the heads 20 of the configuration illustrated.

I prefer to permanently mount one of the heads upon one end of theshaft, as by screwing it on the shaft as shown at 21; and I prefer tosecure the other head upon the shaft by means of a pin 22 passingthrough the shaft and lying in a slot or groove 23 in the outside faceof the head. The heads and shaft .may be removed by removing the pin 22and removing the left hand head from the shaft and then by moving theshaft and the other head longitudinally.

Each of the heads 20 contains a spring 25 pressing against an interiorwasher 26, and the inner end of each head has a closure 27 havingcircumferentially arranged openings 28 therein with enlarged endportions 28a, so that hooked shaped extensions 29 on washer may beinsertedv through the enlarged portions 28a and the washer then turnedto the position shown in the various views, when the extensions 29cannot be withdrawn' without being turned again. The extensions 29project through the closures 27 and engage with the interior springpressed `washer 26; so that' the springs 25 press the washers 30inwardly toward each other and press them against the springs 19, or, incase springs 19 are absent, they press the washers 30 directly againstthe extensions 18 of the contact washers 15.

It will be noted that the construction is such that members 30 cannot bemoved from proper relation tothe heads 2O without relative rotation;and-this relative rotation, as well as rotation of the heads relative tothe harp orvframe 10, is-prevented by the means now described.- Upon theform of harp shown in the drawings there is usually a web which projectsupwardly above the boss 36 in which shaft 13 is carried. The upper sideof each head 20 has a head cannot turn unless it is withdrawnlongitudinally. The member 3() fits around the boss 3G and has a notchor slot 30L cut in it which fits around the web 35; so that, when theparts are all assembled, the washer 30 is also prevented from rotatingrelative to the frame, and is thereby prevented from rotating relativeto the head.

Vhen my improved trolley is in use, the springs 25 exert their forces topress the contact washers l5 against the hub of the wheel; and thisforce is uniform and presses the washers into uniform contact with thewheel. The springs 25 are not liable to be broken or deformed as theyare entirely inclosed within the heads 20 which may be made sufficientlyheavy to adequately protect the springs. Changes of detail, such as theshape and size of the heads, etc., may be made to apply my improvementto various forms of trolley.

Having described a preferred form of my invention, I claim:

l. A trolley, embodying a frame, a shaft carried therein, a trolleywheel on said shaft, a contact member adapted to be pressed against thewheel, a removable head mounted on the shaft, a spring in said headadapted to press the contact member against the wheel, and means forpreventing rotation of the head relative to the frame.

2. A trolley, embodying a frame, a shaft carried therein and projectingoutside the frame, a trolley wheel on said shaft inside the frame, acontact member between the wheel and frame adapted to be pressed againstthe wheel, a removable head mounted on the shaft exterior of the frame,a spring in said head pressing the Contact member against the wheel, andmeans for preventing rotation of the head relative to the frame.

3. A trolley, embodying a frame, a shaft carried therein Vand projectingoutside the frame, a trolley wheel on said shaft inside the frame, aContact member between the wheel and frame adapted to be pressed against.the wheel, a removable head mounted on the shaft exterior of the frame,interengaging means on the frame and head to prevent rotation of thehea-d relative to the frame, and a spring in said head pressing theContact member against the wheel.

4L. A trolley, embodying a bifurcated frame, a shaft carried in thefurcations thereof, a trolley wheel mounted on the shaft between thefurcations, a pair of contact members between the furcations one on eachside of the shaft outside the furcations, springs in said heads pressingsaid contact members against the wheel, and means for preventingrotation of the head relative to the frame.

5. A trolley, embodying a bifurcated frame, a shaft carried in thefurcations j thereof, a trollev wheel mounted on the shaft between thefurcations, a pair of contact members between the furcations one on eachside of the wheel adapted to be pressed against the wheel, heads mountedone on each end of the shaft outside the furcations, interengaging meansbetween the frame and heads to prevent rotation of the heads relative tothe frame, and springs in said heads pressing said contact membersagainst the wheel.

6. A trolley, embodying a frame, a shaft carried therein, a trolleywheel on said shaft, a Contact member between the wheel and frameadapted to be pressed against the wheel, a head mounted on the end ofthe shaft, interengaging means between the head and the frame to preventrotation of the head, a washer intermediate the head and Contact memberhaving projections extending within the head, there being openings inthe head of such configuration that in order to remove said extensionsfrom the head the washer and head must be relatively rotated,interengaging means between the washer and frame to prevent rotation ofthe washer, and a spring in the head pressing said extensions and saidwasher toward the contact member.

7. A trolley, embodying a frame, a shaft carried therein, a trolleywheel on the shaft, a Contact washer around the shaft between the wheeland frame with projections extending through the frame, the end of theshaft projecting beyond the frame, a spring carrying head mounted `onthe end of the shaft, interengaging means between the head and frame toprevent rotation of the head, a washer between the head and frame, aclosure for the head on its side toward the washer, said closure havingcircumferentially extending openings therein, extensions on said washeradapted to project through said openings, being of such arrangement thatthe washer must be rotated relatively to the head in order to be removedtherefrom, and a spring in said head pressing against said extensions topress said last named washer toward the extensions on the contactwasher. f

In witness that l claim the foregoing l have hereunto subscribed my namethis Qsi day of June, 1915.

MARK LEV, Jr.. Witnesses:

JAMns T. BARKELEW, ELwooD BARKnLnw.

Copies of this patent may be'o'btaned for ve cents each, by addressing.the Commissioner of Patents, Washington, D. C.

